Chungli Ao is the prestige dialect of Ao and it is a Sino-Tibetan language of northeast India. It is the most widely spoken of the Ao languages which also comprise Mongsen Ao and Changki. It is taught up to the tenth grade in schools of the Mokokchung district. It is also spoken by the Ao Nagas of Nagaland, a hill state in northeast India. Being the official language of religion, the dialect has a Bible translation and is used in church services as well as to make public announcements. A local Chungli newspaper is also published online. The number of speakers who reported Chungli Ao as their mother tongue are approximately 130,000 according to the 2011 census report of India. A phonological reconstruction of Proto-Central-Naga has been compiled by Daniel Bruhn